Lewis scored 36 total points, grabbed 27 rebounds and snatched away 12 steals in three games last week for second-place Mitchell.
The senior is leading the Mustangs with 11.4 points and 8.0 rebounds per night.
Lewis and the Mustangs are trying to become the first Mitchell girls basketball team to make four-straight regional playoff appearances. Picking up a postseason win would also be a first. The Mustangs are 0-7 all-time in the playoffs.